addbbs.java

在学校做的第一个jsp专周论坛,用了些ajax技术.

package com.service;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.data.Bbs;
import com.db.*;

public class addbbs extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public addbbs() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
        
		response.setContentType("text/xml;charset=utf-8");
		response.setHeader("Cache-Control","no-cache"); 
		PrintWriter out = response.getWriter();
		request.setCharacterEncoding("UTF-8"); 
		StringBuffer backInf=new StringBuffer();
		HttpSession sess=request.getSession(true);
		//读取用户的信息
		String username=(String)sess.getAttribute("name");//
		String indentity=(String)sess.getAttribute("indentity");
		//获取主题
		String bbstopic=(String)request.getParameter("bbstopic");
		//获取内容
		String bbscontent=(String)request.getParameter("bbscontent");
		//获取ip
		String userip=request.getRemoteAddr();//ip
		//获取版主id
		int board_id=Integer.parseInt(request.getParameter("board_id"));
		//获取本地时间
		String bbsdata=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(Calendar.getInstance().getTime()); 
		//插入语句
		String query="insert into bbs(username,userip,bbstopic,bbscontent," +
		"bbsdata, board_id,indentity,bbsredata,bbsrename) values("+"'"+username+"'"+","+"'"+userip+"'"+","+"'"+bbstopic+"'"+","
		+"'"+bbscontent+"'"+","+"'"+bbsdata+"'"+","+ board_id+","+"'"+indentity+"'"+","+"'"+bbsdata+"'"+","+"'"+username+"'"+")";
        backInf.append("<Infs>");
        
        //执行数据库操作 
        if(DataProcess.ExeQuery(query)){
        	backInf.append("<Inf>success</Inf>");
        }else{
        	backInf.append("<Inf>fail</Inf>");
		  
        }
        backInf.append("</Infs>");
        //帖子数目加一
        String sql="update board set boardtopics=boardtopics+1 where board_id="+board_id;
        DataProcess.ExeQuery(sql);
        //积分加五
        String sqla="update user set userclass=userclass+5 where username="+"'"+username+"'";
        
        DataProcess.ExeQuery(sqla);
        out.print(backInf);
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}